This TV remote control receiver uses a ratchet system to activate an old drum-type selector to change channels. A common system at the time. The circuit is from a Radio Electronics from February 1961.
The circuit shown has a differential input and employs transistors of an array of matched types. The...
This tunable circuit was found in the May 1994 issue of Electronics Now magazine. The circuit has...
This circuit includes the power supply from the power grid. We found it in Radio Electronics from...